This book has influences reaching many aspects of my life. The strong underpinnings of the theory in the ideas of Pavlov and Vygotsky owe much to my early mentor MB Macmillan, and the ideas from communication and systems thinking to Robyn Penman. David Hill, my long-term boss and mentor at the Cancer Council Victoria, has been a constant source of inspiration and advice and has shaped my thinking in innumerable ways. I am indebted to my research team from over the years for support, suggestions and helping me show how some of my early ideas were wrong. The emergence of the ideas in this book has benefitted from discussions over the years with many people, but particularly with Arie Dijkstra, Robert West, Geoff Fong and Mike Cummings.
Related directly to the present volume, particular thanks are due to James Balmford and David Young for incisive comments on drafts and to other members of my team for chasing references and other bits and pieces. I am also grateful for comments on a preliminary draft from Susan Michie, Steve Sutton and Jill Francis, in particular. I am indebted to those who pointed out the burgeoning thinking about dual-process theories within psychology of which I was unaware, which has allowed me to align my thinking with elements of that work. Finally thanks to my family, my wife Virginia Lewis, who not only put up with me but read and commented positively on key elements, and to Ross and Harry who at least humoured me.